/* ============================================================
   Screen · Practice (/training/{listening|reading|writing|speaking})
   4 variants share this CSS; skill-coded accent set via
   [data-skill="..."] on the .practice root.
   Reuses app-header, components.
   ============================================================ */

.practice {
  background: var(--gio-color-bg);
  min-height: 100vh;
  padding-bottom: var(--gio-space-9);

  /* default accent — overridden by [data-skill] below */
  --_skill-accent: var(--gio-color-action);
  --_skill-soft: var(--gio-color-action-soft);
}
.practice[data-skill="listening"] {
  --_skill-accent: var(--gio-color-skill-listening);
  --_skill-soft: color-mix(in oklab, var(--gio-color-skill-listening) 12%, transparent);
}
.practice[data-skill="reading"] {
  --_skill-accent: var(--gio-color-skill-reading);
  --_skill-soft: color-mix(in oklab, var(--gio-color-skill-reading) 12%, transparent);
}
.practice[data-skill="writing"] {
  --_skill-accent: var(--gio-color-skill-writing);
  --_skill-soft: color-mix(in oklab, var(--gio-color-skill-writing) 12%, transparent);
}
.practice[data-skill="speaking"] {
  --_skill-accent: var(--gio-color-skill-speaking);
  --_skill-soft: color-mix(in oklab, var(--gio-color-skill-speaking) 12%, transparent);
}

.practice__container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--gio-space-7);
}
@media (max-width: 768px) { .practice__container { padding: 0 var(--gio-space-4); } }

/* ---- Hero ---- */
.practice-hero {
  padding: var(--gio-space-9) 0 var(--gio-space-5);
  position: relative;
  overflow: hidden;
}
.practice-hero::before {
  content: '';
  position: absolute;
  top: -100px; right: -120px;
  width: 500px; height: 500px;
  background: radial-gradient(closest-side, var(--_skill-soft), transparent);
  pointer-events: none;
  z-index: 0;
}
.practice-hero__inner {
  position: relative; z-index: 1;
  display: flex;
  align-items: center;
  gap: var(--gio-space-5);
}
.practice-hero__icon {
  width: 64px; height: 64px;
  border-radius: var(--gio-radius-xl);
  background: var(--_skill-soft);
  color: var(--_skill-accent);
  display: grid; place-items: center;
  font-size: 28px;
  flex-shrink: 0;
}
.practice-hero__eyebrow {
  font-size: var(--gio-text-xs);
  font-weight: var(--gio-w-bold);
  letter-spacing: var(--gio-tracking-wide);
  text-transform: uppercase;
  color: var(--_skill-accent);
  margin-bottom: var(--gio-space-1);
}
.practice-hero__title {
  font-family: var(--gio-font-display);
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: var(--gio-w-extrabold);
  letter-spacing: -0.025em;
  color: var(--gio-color-text-strong);
  margin: 0 0 var(--gio-space-2);
}
.practice-hero__sub {
  font-size: var(--gio-text-base);
  color: var(--gio-color-text-muted);
  margin: 0;
  max-width: 64ch;
}

/* ---- Skill tabs ---- */
.practice-tabs {
  display: flex;
  gap: var(--gio-space-1);
  border-bottom: 1px solid var(--gio-color-divider);
  margin: var(--gio-space-7) 0 var(--gio-space-5);
  overflow-x: auto;
  scrollbar-width: none;
}
.practice-tabs::-webkit-scrollbar { display: none; }
.practice-tab {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  font-family: inherit;
  font-size: var(--gio-text-sm);
  font-weight: var(--gio-w-semibold);
  color: var(--gio-color-text-muted);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  margin-bottom: -1px;
}
.practice-tab:hover { color: var(--gio-color-text-strong); text-decoration: none; }
.practice-tab--active {
  color: var(--_skill-accent);
  border-bottom-color: var(--_skill-accent);
}
.practice-tab__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gio-color-text-muted);
}
.practice-tab[data-skill="listening"] .practice-tab__dot { background: var(--gio-color-skill-listening); }
.practice-tab[data-skill="reading"] .practice-tab__dot { background: var(--gio-color-skill-reading); }
.practice-tab[data-skill="writing"] .practice-tab__dot { background: var(--gio-color-skill-writing); }
.practice-tab[data-skill="speaking"] .practice-tab__dot { background: var(--gio-color-skill-speaking); }

/* ---- Topic chip filter ---- */
.topic-filter {
  display: flex;
  gap: var(--gio-space-2);
  flex-wrap: wrap;
  align-items: center;
  padding-bottom: var(--gio-space-5);
}
.topic-filter__label {
  font-size: var(--gio-text-xs);
  font-weight: var(--gio-w-bold);
  letter-spacing: var(--gio-tracking-wide);
  text-transform: uppercase;
  color: var(--gio-color-text-muted);
  margin-right: var(--gio-space-2);
}
.topic-filter__group {
  display: inline-flex;
  align-items: center;
  gap: var(--gio-space-2);
  flex-wrap: wrap;
}
.topic-filter__group-label {
  font-size: var(--gio-text-xs);
  font-weight: var(--gio-w-bold);
  color: var(--gio-color-text-strong);
}
.topic-chip {
  padding: 6px 12px;
  background: var(--gio-color-surface);
  border: 1px solid var(--gio-color-border);
  border-radius: var(--gio-radius-pill);
  font-size: var(--gio-text-xs);
  font-weight: var(--gio-w-semibold);
  color: var(--gio-color-text-muted);
  cursor: pointer;
  font-family: inherit;
  transition: all var(--gio-dur-fast) var(--gio-ease-out);
}
.topic-chip:hover { color: var(--gio-color-text-strong); border-color: var(--gio-color-border-strong); }
.topic-chip--active {
  background: var(--_skill-accent);
  color: white;
  border-color: var(--_skill-accent);
}

/* ---- Section list ---- */
.section-list {
  display: flex; flex-direction: column;
  gap: var(--gio-space-3);
}
.section-row {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: var(--gio-space-4);
  align-items: center;
  padding: var(--gio-space-5);
  background: var(--gio-color-surface);
  border: 1px solid var(--gio-color-border);
  border-radius: var(--gio-radius-xl);
  text-decoration: none;
  color: inherit;
  transition: all var(--gio-dur-fast) var(--gio-ease-out);
  position: relative;
}
.section-row:hover {
  border-color: var(--_skill-accent);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--gio-shadow-sm);
}
@media (max-width: 640px) {
  .section-row { grid-template-columns: 1fr; gap: var(--gio-space-3); }
  .section-row__index { display: none; }
}

.section-row__index {
  width: 56px; height: 56px;
  border-radius: var(--gio-radius-md);
  background: var(--_skill-soft);
  color: var(--_skill-accent);
  display: grid; place-items: center;
  font-family: var(--gio-font-display);
  font-size: 22px;
  font-weight: var(--gio-w-extrabold);
}
.section-row__body {
  display: flex; flex-direction: column; gap: var(--gio-space-2);
  min-width: 0;
}
.section-row__head {
  display: flex; align-items: center; gap: var(--gio-space-2);
  flex-wrap: wrap;
}
.section-row__title {
  font-size: var(--gio-text-base);
  font-weight: var(--gio-w-bold);
  color: var(--gio-color-text-strong);
  margin: 0;
}
.section-row__meta {
  display: flex; gap: var(--gio-space-4);
  font-size: var(--gio-text-xs);
  color: var(--gio-color-text-muted);
  flex-wrap: wrap;
}
.section-row__meta-item { display: inline-flex; align-items: center; gap: 4px; }
.section-row__last {
  font-size: var(--gio-text-xs);
  color: var(--gio-color-text-muted);
}
.section-row__last strong {
  color: var(--gio-color-success);
  font-weight: var(--gio-w-bold);
  font-family: var(--gio-font-display);
}
.section-row__cta {
  display: flex; align-items: center; gap: var(--gio-space-2);
}

/* Locked variant */
.section-row--locked {
  opacity: 0.78;
}
.section-row--locked .section-row__index {
  background: var(--gio-color-bg-subtle);
  color: var(--gio-color-text-muted);
}
.section-row--locked .section-row__index::after {
  content: '🔒';
  font-size: 14px;
  position: absolute;
  margin-left: -8px;
  margin-top: -22px;
}

/* Difficulty pill */
.diff-pill {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px;
  font-weight: var(--gio-w-bold);
  padding: 2px 8px;
  border-radius: var(--gio-radius-pill);
  background: var(--gio-color-bg-subtle);
  color: var(--gio-color-text-muted);
  letter-spacing: var(--gio-tracking-default);
}
.diff-pill::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.diff-pill--easy   { color: var(--gio-color-success); }
.diff-pill--medium { color: var(--gio-color-warning); }
.diff-pill--hard   { color: var(--gio-color-danger); }

/* ---- Search box ---- */
.practice-search {
  display: flex;
  align-items: center;
  gap: var(--gio-space-2);
  position: relative;
  margin-bottom: var(--gio-space-4);
}
.practice-search__icon {
  position: absolute;
  left: 12px;
  font-size: var(--gio-text-sm);
  opacity: .6;
  pointer-events: none;
}
.practice-search__input {
  flex: 1;
  min-width: 0;
  padding: 9px 12px 9px 34px;
  background: var(--gio-color-surface);
  border: 1px solid var(--gio-color-border);
  border-radius: var(--gio-radius-pill);
  font-size: var(--gio-text-sm);
  color: var(--gio-color-text-strong);
}
.practice-search__input:focus {
  outline: none;
  border-color: var(--_skill-accent, var(--gio-color-action));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--_skill-accent, var(--gio-color-action)) 18%, transparent);
}
.practice-search__clear {
  font-size: var(--gio-text-xs);
  font-weight: var(--gio-w-semibold);
  color: var(--gio-color-text-muted);
  text-decoration: none;
  white-space: nowrap;
}
.practice-search__clear:hover { color: var(--gio-color-text-strong); }

/* ---- Result bar ---- */
.practice-resultbar {
  font-size: var(--gio-text-xs);
  color: var(--gio-color-text-muted);
  font-weight: var(--gio-w-semibold);
  margin-bottom: var(--gio-space-3);
}

/* ---- Pagination (bootstrap-5 markup, themed to skill accent) ---- */
.practice-pagination {
  display: flex;
  justify-content: center;
  margin-top: var(--gio-space-6);
}
.practice-pagination .pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.practice-pagination .page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 10px;
  border: 1px solid var(--gio-color-border);
  border-radius: var(--gio-radius-md);
  background: var(--gio-color-surface);
  color: var(--gio-color-text);
  font-size: var(--gio-text-sm);
  font-weight: var(--gio-w-semibold);
  text-decoration: none;
}
.practice-pagination .page-link:hover {
  border-color: var(--gio-color-border-strong);
  color: var(--gio-color-text-strong);
}
.practice-pagination .page-item.active .page-link {
  background: var(--_skill-accent, var(--gio-color-action));
  border-color: var(--_skill-accent, var(--gio-color-action));
  color: #fff;
}
.practice-pagination .page-item.disabled .page-link {
  opacity: .45;
  pointer-events: none;
}